Issue with templates in archetype

[Edmonton]

I’m trying to set the slug to a string of length 6 using the following.

1. Get a hmac string.
2. From the string, get the prefix of length 6.

---
slug: {{ substr {{ hmac "sha256" "<random-string>" .Path }} 0 6 }}
---

Apparently this syntax is wrong. How can this be fixed?

[jmooring]

@Edmonton

slug: {{ substr {{ hmac "sha256" "<random-string>" .Path }} 0 6 }}

Braces surround the action; use parentheses within.

{{ substr (hmac "sha256" "<random-string>" .Path ) 0 6 }}